Following Situation

I have Dataobjects "Project" which have "has_one" relations to "ProjectPage"

following code in the dataobject projects:

public function getCMSFields_forPopup()
 {	
    $pData = (DataObject::get('ProjectPage'));

    if ($pData) {
           $ProjectPageSource = $pData->toDropDownMap();
    }

    $fields->push(new DropdownField(
			'ProjectPage',
		  	'ProjectPage',
		  	$ProjectPageSource,
		        $this
    ));

....}

In the Admin it renders a perfect DropDown List of all my other ProjectPage Pages.
Sadly it never saves!

I think i remember that i'm suppost to use "ProjectPageID" as first Argument to "DropdownFiled" - but then i get an empty DropDown Box.

Where's my Bug?

Thanks a Lot

I think i remember that i'm suppost to use "ProjectPageID" as first Argument to "DropdownFiled" - but then i get an empty DropDown Box.

You should use the ProjectPageID name for the has_one. It shouldn't stop loading the pages from that as you're passing the pages in manually. Do you get an error when using ProjectPageID?

If i use ProjectPageID the DropDown disapears in Admin with no error message

		$fields->push(new DropdownField(
				'ProjectPageID',
	 		  	'Zugehörige Projektseite auswählen',
	 		  	$ProjectPageSource,
				$this
		));

I am really stuck on this one...

I added the following Workaround to the DataObject!
Like this i am able to reassign the DataObject to a new Page!

public function onBeforeWrite() 
{ 
   $this->ProjectPageID = $this->ProjectPage;
   parent::onBeforeWrite(); 
}

Thanks for all the help on IRC! (especially Willr and DesignCity) You Rock!